media/webrtc/trunk/build/android/pylib/python_test_caller.py@6474c204b198
media/webrtc/trunk/build/android/pylib/python_test_caller.py
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 # Use of this source code is governed by a BSD-style license that can be
3 # found in the LICENSE file.
5 """Helper module for calling python-based tests."""
8 import logging
9 import sys
10 import time
12 from test_result import TestResults
15 def CallPythonTest(test, options):
16 """Invokes a test function and translates Python exceptions into test results.
18 This method invokes SetUp()/TearDown() on the test. It is intended to be
19 resilient to exceptions in SetUp(), the test itself, and TearDown(). Any
20 Python exception means the test is marked as failed, and the test result will
21 contain information about the exception.
23 If SetUp() raises an exception, the test is not run.
25 If TearDown() raises an exception, the test is treated as a failure. However,
26 if the test itself raised an exception beforehand, that stack trace will take
27 precedence whether or not TearDown() also raised an exception.
29 shard_index is not applicable in single-device scenarios, when test execution
30 is serial rather than parallel. Tests can use this to bring up servers with
31 unique port numbers, for example. See also python_test_sharder.
33 Args:
34 test: an object which is ostensibly a subclass of PythonTestBase.
35 options: Options to use for setting up tests.
37 Returns:
38 A TestResults object which contains any results produced by the test or, in
39 the case of a Python exception, the Python exception info.
40 """
42 start_date_ms = int(time.time()) * 1000
43 failed = False
45 try:
46 test.SetUp(options)
47 except Exception:
48 failed = True
49 logging.exception(
50 'Caught exception while trying to run SetUp() for test: ' +
51 test.qualified_name)
52 # Tests whose SetUp() method has failed are likely to fail, or at least
53 # yield invalid results.
54 exc_info = sys.exc_info()
55 return TestResults.FromPythonException(test.qualified_name, start_date_ms,
56 exc_info)
58 try:
59 result = test.Run()
60 except Exception:
61 # Setting this lets TearDown() avoid stomping on our stack trace from Run()
62 # should TearDown() also raise an exception.
63 failed = True
64 logging.exception('Caught exception while trying to run test: ' +
65 test.qualified_name)
66 exc_info = sys.exc_info()
67 result = TestResults.FromPythonException(test.qualified_name, start_date_ms,
68 exc_info)
70 try:
71 test.TearDown()
72 except Exception:
73 logging.exception(
74 'Caught exception while trying run TearDown() for test: ' +
75 test.qualified_name)
76 if not failed:
77 # Don't stomp the error during the test if TearDown blows up. This is a
78 # trade-off: if the test fails, this will mask any problem with TearDown
79 # until the test is fixed.
80 exc_info = sys.exc_info()
81 result = TestResults.FromPythonException(test.qualified_name,
82 start_date_ms, exc_info)
84 return result
